A piece of wire carrying a current of 6.00 A is bent in the form of a circular arc of radius 10.0 cm, and it subtends an angle of `120^@` at the centre. Find the magnetic field B due to this piece of wire at the centre.

In a circle of radius 21 cm, an arc subtends an angle of 60^(@) at the centre. Find the area of sector formed by the arc.

In a circle of radius 21 cm, an arc subtends an angle of 60° at the centre. Find : Area of the sector formed by the arc

Find the length of an arc of a circle of radius 10cm subtending an angle of 30^0 at the centre

In a circle of radius 28 cm, an arc subtends an angle of 108^(@) at the centre . (a) Find the area of the sector. (b) Find the length of the arc.

A straight wire carrying a current of 13 A is bent into a semi-circular arc of radius 2 cm as shown in figure. The magnetic field is 1.5 xx 10^(-4)T at the centre of arc, then the magnetic field due to straight segment is

A straight wire carrying a current of 5 A is bent into a semicircular arc of radius 2 cm as shown in the fig. Find the magnitude and direction of the magnetic field at the centre of the arc.

A straight wire carrying a current of 12A is bent into a semicircular arc of radius 2*0cm as shown in figure. Consider the magnetic field vecB at the centre of arc. (a) What is the magnetic field due to the staight segments? (b) In what way the contribution to vecB from the semicircle differs from that of a circular loop and in what way does it resemble? (c) Would your answer be different if the wire were bent into a semicircle arc of the same radius but in the opposite way as shown in figure

A piece of wire 11 cm long is bent into the form of an arc of a circle subtending an angle of 45^(@) at its centre. Find the radius of the circle.

A piece of wire 20 cm long is bent into the from of an arc of a circle, subtending an angle of 60^(@) at its centre. Find the radius of the circle.